Global Patent Index - EP 1081486 A1

EP 1081486 A1 2001-03-07 - METHOD AND DEVICE FOR MEASURING INTERNAL CHARACTERISTIC DISTRIBUTION OF SCATTERING/ABSORBING BODY

Title (en)

METHOD AND DEVICE FOR MEASURING INTERNAL CHARACTERISTIC DISTRIBUTION OF SCATTERING/ABSORBING BODY

Title (de)

VERFAHREN UND VORRICHTUNG ZUR MESSUNG DER CHARAKTERISTISCHEN INNEREN VERTEILUNG VON EINEM STREUENDEN/ABSORBIERENDEN KÖRPER

Title (fr)

PROCEDE ET APPAREIL PERMETTANT DE MESURER LA REPARTITION DE CARACTERISTIQUE D'UN CORPS D'ABSORPTION/DIFFUSION

Publication

EP 1081486 A1 (EN)

Application

EP 99921231 A

Priority

  • JP 9902696 W
  • JP 14430098 A

Abstract (en)

A method of measuring the internal characteristic distribution of a scattering/absorbing body, comprising allowing a light beam to enter a medium to be measured, detecting the light beam transmitted through the medium, collecting measured values of a predetermined parameter for each of combinations of the position where the light beam enters and the position where the light beam is detected, setting a reference value of the absorption coefficient, finding estimated values of the parameter for each of the combinations, defining a weight function for each voxel according to the micro-Beer-Lambert's law, calculating the differences in absorption coefficient between voxels by using the measured values of the parameter, the estimated values, and the weight function, and calculating the absolute values of the absorption coefficients of the voxels. <IMAGE>

IPC 1-7 (main, further and additional classification)

G01N 21/17

IPC 8 full level (invention and additional information)

G01B 11/00 (2006.01); G01J 1/04 (2006.01); G01N 21/17 (2006.01); G01N 21/47 (2006.01)

CPC (invention and additional information)

G01N 21/4795 (2013.01)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

EP 1081486 A1 20010307; EP 1081486 A4 20020731; EP 1081486 B1 20051116; AU 3850999 A 19991213; DE 69928392 D1 20051222; DE 69928392 T2 20060803; JP 3887486 B2 20070228; JP H11337476 A 19991210; US 6335792 B1 20020101; WO 9961893 A1 19991202

INPADOC legal status


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2006-10-25 [26N] NO OPPOSITION FILED

- Effective date: 20060817

2006-07-07 [ET] FR: TRANSLATION FILED

2005-12-22 [REF] CORRESPONDS TO:

- Document: DE 69928392 P 20051222

2005-11-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

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2005-11-16 [REG GB FG4D] EUROPEAN PATENT GRANTED

2004-05-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040318

2002-07-31 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20020613

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2002-07-31 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7G 01N 21/17 A, 7G 01N 21/47 B, 7A 61B 5/00 B, 7G 06T 11/00 B, 7G 01N 23/04 B, 7G 01T 1/29 B

2001-03-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001221

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